Self-threading shuttle eye



June 24, 1958 H. s. PELLATT 2,840,115

SELF-THREADING SHUTTLE EYE Filed March 18, 1957 IN V EN TOR.

HOWARD S. PELLATT.

ZMWM United States Patent 2,840,115 SELF-THREADING SHUTTLE EYE Howard S. Pellatt, Saylesville, R. I. Application March 18, 1957, Serial No. 646,803 3 Claims. (Cl. 139223) This invention relates to shuttles for looms of the automatic weft-replenishing type and in which selfthreading of the shuttles is necessary.

It is the general object of my invention to provide an improved self-threading shuttle eye which may be easily manufactured and which is particularly adapted for reliable :and automatic self-threading.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the accompanying drawings, in which:

Fig. 1 is a partial plan view of a shuttle having my improved shuttle eye mounted therein;

Fig. 2 is an end view of the shuttle eye, looking in the direction of the arrow 2 in Fig. 1;

Fig. 3 is an end view of the eye, looking in the'direction of the arrow 3 in Fig. 1;

Fig. 4 is a rear elevation of the eye, lookingin the direction of the arrows 4 in Figs. 1 and 3; and

Fig. 5 is a detail view of a friction plate.

Referring to the drawings, it will be seen that my improved shuttle eye is of single-piece construction, although for convenience in production the upper portion may be formed separately and may be thereafter mounted on the lower portion in any convenient manner, as by brazing or soldering.

The shuttle S is provided with a suitable cut-out portion or recess in which the body 12 of the self-threading shuttle eye is accurately fitted. The body maybe secured by the usual cross screw or bolt 14 (Fig. 1).

As viewed in Fig. 2, the body 12 is provided with a longitudinal channel or recess 20 which is entirely open from the rear surface 22 (Fig. 4) to the front surface 24. Above the recess 20, the body 12 is vertically slotted as indicated at.26 (Fig. 2) and communicates with a lateral offset passage 28.

The body 12 supports a forwardly-projecting shelf or horn 30 which terminates in a depending lug 31. The edge portion 32 of the part 30 constitutes an upper thread-guiding and retaining member and overhangs the passage 28, and in fact forms the upper surface thereof. This edge portion 32 is recessed at 34 for clearance and to provide access to the usual friction plates 36, one of which is shown in Fig. 5.

A transverse or outlet passage 40 is formed in part by the front surface 24 of the body 12 and in part by a depending front portion or horn 50. Part of this horn underlies the passage 28 and also forms the front side of the passage 40. The passage 40 is downwardly slotted as indicated at 41 (Fig. 4).

A shuttle eye formed as herein described has been found to be particularly satisfactory and reliable in operation.

During the threading operation, the thread is drawn forward through the lateral top passage 28 and slips easily around the front end of the horn and then passes under the horn and up through the narrow slot or passage 41 to the outlet passage 40. The usual friction or wear pins (Fig. l) are provided wherever desirable.

A shuttle eye made as above described has been found very satisfactory in operation and accidental unthreading very rarely takes place.

Having thus described by invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a loom shuttle, a self-threading shuttle eye comprising a body having a longitudinally-disposed thread passage with a longitudinal slot overlying said passage and communicating therewith, said body having a substantially flat upper surface and having an upper threadguiding and retaining member overlying said flat upper surface and closely adjacent thereto and of substantial width and providing :a relatively wide but verticallyrestricted entrance thread passage.

2. The combination in a loom shuttle as set forth in claim 1, in which the body has a forwardly-projecting horn underlying a forward part of said retaining member and continuing said vertically-restricted passage, and said retaining member having a depending projection forward of said horn and disposed laterally thereof.

3. The combination in a loom shuttle as set forth in claim 1, in which the retaining member is provided with friction plates in said thread passage, and in which the retaining member is recessed adjacent its entrance portion to provide for thread clearance and access to said friction plates.

No references cited. 

